五年级数学小数加减法简便计算
a+b=b+a
a+b+c=a+(b+c)
a-b-c=a-(b+c)
5.93+0.19+2.81
3.07-0.38-1.62
7.3+2.7-7.3+2.7
1.27+3.9+0.73+16.1
48.4+2.78+51.6-0.78
23.4-0.8-13.4-7.2
139.46—(58.74+19.46)
4.8+8.63+5.2+0.37
2.35+1.713+0.287+7.65
7.5+4.9-6.5
36.54-1.76-4.54
3.25+1.79-0.59+1.75
12.7-(3.7+0.84)
25.6-(0.23+5.6)-1.77
13.6+(4.28+6.4)+5.72